Once prickly, U.S. and Mexico bound by trade

The Atlantic -The grandiose promise of trade is that it binds countries together, breeding peace and cooperation. This is a risible overstatement when applied generally to the world. But in the case of the countries separated by the Rio Grande, it has proved wondrously true. A generation after the signing of the North American Free Trade Agreement, the United States and Mexico couldn’t be more interdependent.